Muzzle brake for guns



G. M. BARNES MUZZLE BRAKE FOR GUNS March 19, 1935.

Filed Aug. 5, 1933 Inventor Gladecm I LEarnes Attorney Patented Mar. 19, 1935 g MUZZLE BRAKE Fon GUNS Barnes, United States Army, Hastings, Mich.

V Gladeon Application Auguste, 1933, Serial 110.683,!54 V (Granted The invention described herein may be manufactured and used by or for the Government for governmental purposes, without the payment to me of any royaltythereon. This invention relates to a} uzzle brake for guns and is an improvement onithe brake disclosed in copending application Serial No. 593,533

of February 17,1932.

. in the application the brake is arranged a utilize a portion of the'gases of discharge and then vent the gases in a forward direction. The improvement consists in providing a container to receive-and temporarily. holdjthe expanded gases. More specifically the container is formed by a cylinder. spaced annularlyifrom thegun barrel.

To these and other ends, the invention'consists I in the construction, arrangement andcombination of elements described hereinafter and pointed tion.

improved muzzle brake taken on the 1ine1-1 ofFig.2. r m

A Fig. 2 is a sectional view taken on the line 2-2 ofFig. 1. p j

Fig. 3 is a. sectional view ofone of the bafiie rings. i 30 The muzzle brake comprises i an imperforate casing 5 having at its rear end spaced internal ribs 6 whosefrontorinner faces 7 are substan tially flush with the face-of the'muzzle of. a gun- 'barrel 8 when the casing secured in place thereon as by the threaded connection 9 and pin 10. I

A number of passages 11 between the spaced ribs establish communication between the'casing. 5-and an imperforate cylinder .12 encircling the 40 forward partof the: gun barrel. The cylinder is maintained in spaced relation to the gun barrel by virtue of its threadedattachment 13 to the exterior of the casing and its threaded attachment 14 to a ring 15 having a sliding fit on the 45 gun barrel to allow for the differences in expan-' sion between the cylinder and the gun barrel. Within the cas" g 5'thereare'aseries of baffle rings 16 specifically-claimed in the 'copending application. Each ringis centered and spaced generally from projecting lugs 17 integral therewith. Thebaiile rings are maintained in spaced relation with re-;' by means of axially project-' spect to each other ing lugs 18 preferably associated with and form- V ing part of the lugs 17.

forward portion of one of .joining Hbaffle ring. In

out in the claims forming a part of this specifica- A practical embodiment of theinvention is il-" lustrated in the accompanying drawing, wherein: Fig. lris a longitudinal sectional viewof the "gun barrel'8.

the casing by means of laterally 2 Claims, (01. 89-42 under 11.31 act of March a, 1883, as amended April 30, 1928; 370 0. G. 757) The baflle rings, in general, are triangular in 1 cross-section and formed with'a concave base 19.

The outer lip 20 of the base is provided'withrecesses. 21 each of which is adapted to receive the the lugs 17 on an ad- 7 5 this manner the baflie rings are lockedag'ainst relative movement.

The inner most baflle ring 16a. abuts against the face 7 of'thecasing 5 and against the, end of- 'thegun while the outermost ring 1612 is threaded 10 I 'on the end of the casing seriesof baflie rings in place.

5 and serves to hold the In operation whenthe gun is fired, the gases of the propellant charge follow the projectile and as they emerge from the muzzle of the gun they 5 expanded and pass laterally between the baflle ring 16. The force extortedby the gases on the concave bases of the battle rings is sufficient to neutralize a considerable amount of the energy of recoil'of the gun.

The gases deflected by the baflle rings are directed through the passages 11 and enter the chamber'formed between the cylinder 12 and the 'When. the pressure in thebore becomes less than the'pressure in the cylinder 12 25 the gases will flow out of the cylinder 12 through the common inlet and'outlet passages 11 and then pass between the baflie rings and escape to atmosphere. As a consequence of theforwardly directed dissipation of the gases they will not interfere with the gun crew or raise a cloud of dust by striking the ground.

I claim. V i V 1. In combination witha gunbarrel, a casing secured to the muzzle of the gun barrel, bafiies within the casing and spaced to providecommon -,inlets and outlets for the transmission'of gases,

a cylinder encircling the forward part of the gun barrel and spaced therefromto provide a chamher, the front end of the gun barrel. and attached to the rear end of the cylinder, and a common" inlet and outlet between .the casing and the chamber.

2. In combination with secured to the muzzle of the gun barrel, baflles within the casing and spaced to provide common inlets and outlets for the transmission of gases,

a cylinder encircling the forward part of thegun barrel and spaced therefrom to provide a chamvber, a ring'having a sl'dingIfit on the gun barrel and" attached to the rear. end of the cylinder, and

a common inlet and outlet "between the casing and the chamber. r Q GLADEON M. BARNES.

said cylinder attached to the 40 exterior of the casing, a ring having a slidingfit on a gun barrel, a casing 45, 

